Gurobi 5.0.1 (linux64) logging started Sat Nov 17 10:25:36 2012 Optimize a model with 79869 rows, 60270 columns and 298653 nonzeros Presolve removed 998 rows and 4410 columns (presolve time = 5s) ... Presolve removed 1000 rows and 4412 columns Presolve time: 6.91s Presolved: 78869 rows, 55858 columns, 291149 nonzeros Variable types: 0 continuous, 55858 integer (55858 binary) Found heuristic solution: objective 245.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 38837 3.0000870e+00 1.504783e+02 0.000000e+00 5s 46742 3.0000961e+00 8.037796e+01 0.000000e+00 10s 49782 3.0000988e+00 1.538034e+02 0.000000e+00 15s 52662 3.0001009e+00 6.173450e+01 0.000000e+00 20s 55542 3.0001028e+00 5.892988e+01 0.000000e+00 25s 58262 3.0001044e+00 4.249702e+01 0.000000e+00 30s 61302 3.0001068e+00 3.607753e+01 0.000000e+00 35s 64182 3.0001097e+00 1.176948e+02 0.000000e+00 40s 67062 3.0001120e+00 4.227089e+01 0.000000e+00 45s 69782 3.0001140e+00 2.829633e+01 0.000000e+00 50s 72342 3.0001158e+00 3.157495e+01 0.000000e+00 55s 75062 3.0001179e+00 3.342990e+01 0.000000e+00 60s 77462 3.0001194e+00 2.631215e+01 0.000000e+00 65s 80022 3.0001212e+00 2.533841e+01 0.000000e+00 70s 82422 3.0001223e+00 1.167706e+01 0.000000e+00 75s 84662 3.0001235e+00 9.611185e+03 0.000000e+00 80s 87062 3.0001245e+00 1.993515e+01 0.000000e+00 85s 89462 3.0001254e+00 1.738929e+01 0.000000e+00 90s 91862 3.0001268e+00 2.694545e+00 0.000000e+00 95s 93573 3.0000000e+00 0.000000e+00 0.000000e+00 99s Root relaxation: objective 3.000000e+00, 93573 iterations, 99.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 176s Explored 0 nodes (155693 simplex iterations) in 176.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%